How Do You Calculate Electrical Resistance in Complex Geometric Shapes?

[nrhk]

How would I find the resistance of said circle

Outer Radius 4a
Inner Radius a

Thickness .15 mm

 

[cepheid]

Are you talking about a hollow cylinder? Are you talking about electrical resistance? If so, don't you need to know the resistivity of the material as well?

 

[nrhk]

Just in terms of variables, yea I guess you could call it a hollow cylinder

I am talking about electrical resistance.

 

[ZapperZ]

What cepheid is trying to tell you is that you need to know the resistivity of the material. Using that information, and the cross-sectional area of your material that is perpendicular to the direction of current flow, will tell you the resistance.

Zz.

 

[nrhk]

I'm solving the problem in terms of variables

I have a circular resistor made out of conducting paper that has inner radius a and outer radius 4a.

I'm pretty sure I have to add an infinite number of circular shells together to get the total resistance of the object.

 

[ZapperZ]

Is this a school work? If it is, it belongs in another forum, and you are usually required to give the full problem first, not your interpretation of the problem. People who are willing to help you with this usually like to see the WHOLE thing first, rather than being given bits and pieces of the problem.

If it isn't, then your geometry is vague.

Zz.